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amd64_edac: make DRAM regions output more human-readable 

Do not shift the TOP_MEM and TOP_MEM2 values by 23 but rather save the
whole 64-bit value read from the MSR. Although the TOP_MEM/TOP_MEM2 bits
are only a subset of the 64bit register, the values are correct since
the remaining bits are Read-As-Zero and no shifting is needed.

Also, cleanup DRAM base/limit debug output.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
This commit is contained in:
Borislav Petkov 2009-10-12 15:27:45 +02:00
parent 72381bd55e
commit e97f8bb8ce
1 changed files with 9 additions and 12 deletions
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21
drivers/edac/amd64_edac.c
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@ -2399,16 +2399,14 @@ static void amd64_read_mc_registers(struct amd64_pvt *pvt)
* Retrieve TOP_MEM and TOP_MEM2; no masking off of reserved bits since
* those are Read-As-Zero
*/
rdmsrl(MSR_K8_TOP_MEM1, msr_val);
pvt->top_mem = msr_val >> 23;
debugf0(" TOP_MEM=0x%08llx\n", pvt->top_mem);
rdmsrl(MSR_K8_TOP_MEM1, pvt->top_mem);
debugf0(" TOP_MEM: 0x%016llx\n", pvt->top_mem);
/* check first whether TOP_MEM2 is enabled */
rdmsrl(MSR_K8_SYSCFG, msr_val);
if (msr_val & (1U << 21)) {
rdmsrl(MSR_K8_TOP_MEM2, msr_val);
pvt->top_mem2 = msr_val >> 23;
debugf0(" TOP_MEM2=0x%08llx\n", pvt->top_mem2);
rdmsrl(MSR_K8_TOP_MEM2, pvt->top_mem2);
debugf0(" TOP_MEM2: 0x%016llx\n", pvt->top_mem2);
} else
debugf0(" TOP_MEM2 disabled.\n");
@ -2434,13 +2432,12 @@ static void amd64_read_mc_registers(struct amd64_pvt *pvt)
* debug output block away.
*/
if (pvt->dram_rw_en[dram] != 0) {
debugf1(" DRAM_BASE[%d]: 0x%8.08x-%8.08x "
"DRAM_LIMIT: 0x%8.08x-%8.08x\n",
debugf1(" DRAM-BASE[%d]: 0x%016llx "
"DRAM-LIMIT: 0x%016llx\n",
dram,
(u32)(pvt->dram_base[dram] >> 32),
(u32)(pvt->dram_base[dram] & 0xFFFFFFFF),
(u32)(pvt->dram_limit[dram] >> 32),
(u32)(pvt->dram_limit[dram] & 0xFFFFFFFF));
pvt->dram_base[dram],
pvt->dram_limit[dram]);
debugf1(" IntlvEn=%s %s %s "
"IntlvSel=%d DstNode=%d\n",
pvt->dram_IntlvEn[dram] ?